Ultrasonic check valve inspection

Details Ultrasonic check valve inspection Ultrasonic check valve inspection

1988-08-05

1990-05-01

Myracle, Jerry W.

Measuring and testing

Vibration

By mechanical waves

73168, G01B 1700

Patent

active

049208020

ABSTRACT:
The disclosed method includes the steps of positioning an ultrasonic transmitter (50, 52) on the exterior body portion (54) of the valve (14), oriented so that the transmitted ultrasonic wave intercepts the path (46) of the closure member (30) at least at one location, and positioning an ultrasonic receiver on the body portion oriented to detect reflected ultrasonic waves when the closure member passes through such location. The valve body (20) is filled with water and the closure member is caused to move along the path. The transmitter and receiver are operated to generate an output signal trace (64) commensurate with the magnitude of the ultrasonic wave reflected from the closure member at the targeted locations along the path.

REFERENCES:
patent: 3455532 (1969-07-01), Barker
patent: 4543649 (1985-09-01), Head et al.
patent: 4678621 (1987-07-01), Callaghan et al.

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